CA2477521A1 - Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne - Google Patents
Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne Download PDFInfo
- Publication number
- CA2477521A1 CA2477521A1 CA002477521A CA2477521A CA2477521A1 CA 2477521 A1 CA2477521 A1 CA 2477521A1 CA 002477521 A CA002477521 A CA 002477521A CA 2477521 A CA2477521 A CA 2477521A CA 2477521 A1 CA2477521 A1 CA 2477521A1
- Authority
- CA
- Canada
- Prior art keywords
- value
- time slot
- sequence
- logical
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 230000015654 memory Effects 0.000 claims abstract description 51
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 101000821257 Homo sapiens Syncoilin Proteins 0.000 description 2
- 102100021919 Syncoilin Human genes 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000013497 data interchange Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mobile Radio Communication Systems (AREA)
- Near-Field Transmission Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Dc Digital Transmission (AREA)
Abstract
L'invention concerne un procédé de codage d'une séquence de bits de données (B1-B5). Ces bits de données présentent une valeur logique "en circuit" ou "hors circuit" (1, 0) et sont organisés dans une séquence de trames de créneaux temporels (FR1-FR5), lesquelles trames contiennent des créneaux temporels (ZS11-ZS14) pouvant prendre une valeur "en circuit" ou "hors circuit" (Z1, Z0). Le codage s'effectue dans une trame de créneaux temporels, de sorte qu'une valeur "hors circuit" est préattribuée à au moins un créneau temporel, des valeurs "en circuit" ou "hors circuit" sont attribuées aux créneaux temporels libres, de manière à former la valeur logique "en circuit" ou "hors circuit" d'un bit de données, et au moins un créneau temporel présentant une valeur "hors circuit" suit un créneau temporel présentant une valeur "en circuit". Ladite invention concerne également un système d'identification (IS), équipé d'un appareil de lecture/écriture (SLG) et d'au moins une mémoire de données mobile (DT1-DT3), lequel système permet la mise en oeuvre dudit procédé. Cette invention offre l'avantage de permettre une détection de collision immédiate (C) lors du codage complémentaire d'un bit de données dans une trame de créneaux temporels correspondante. Ce procédé peut être mis en oeuvre, de façon avantageuse, dans une bande de fréquences ISM de 13,56 MHz pour une transmission de données sans contact par couplage inductif.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10208731.8 | 2002-02-28 | ||
| DE10208731 | 2002-02-28 | ||
| PCT/DE2003/000480 WO2003073362A1 (fr) | 2002-02-28 | 2003-02-17 | Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2477521A1 true CA2477521A1 (fr) | 2003-09-04 |
Family
ID=27762500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002477521A Abandoned CA2477521A1 (fr) | 2002-02-28 | 2003-02-17 | Procede de codage d'une sequence de bits de donnees, en particulier de transmission par interface hertzienne |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1479029B1 (fr) |
| AT (1) | ATE303635T1 (fr) |
| CA (1) | CA2477521A1 (fr) |
| DE (1) | DE50301097D1 (fr) |
| WO (1) | WO2003073362A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7372364B2 (en) * | 2003-11-10 | 2008-05-13 | 3M Innovative Properties Company | Algorithm for RFID security |
| WO2005059808A1 (fr) * | 2003-12-17 | 2005-06-30 | Siemens Aktiengesellschaft | Dispositif de lecture/ecriture, systeme d'identification comprenant un dispositif de lecture/ecriture et des memoires de donnees mobiles, ainsi qu'utilisation d'un dispositif de lecture/ecriture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4471345A (en) * | 1982-03-05 | 1984-09-11 | Sensormatic Electronics Corporation | Randomized tag to portal communication system |
| DE19910875A1 (de) * | 1999-03-11 | 2000-09-21 | Siemens Ag | System zur berührungslosen, seriellen Übertragung von Daten aus insbesondere schnell bewegten, mobilen Datenträgern, und bevorzugte Verwendungen des Systems |
-
2003
- 2003-02-17 WO PCT/DE2003/000480 patent/WO2003073362A1/fr active IP Right Grant
- 2003-02-17 DE DE50301097T patent/DE50301097D1/de not_active Expired - Lifetime
- 2003-02-17 CA CA002477521A patent/CA2477521A1/fr not_active Abandoned
- 2003-02-17 EP EP03709616A patent/EP1479029B1/fr not_active Expired - Lifetime
- 2003-02-17 AT AT03709616T patent/ATE303635T1/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1479029A1 (fr) | 2004-11-24 |
| ATE303635T1 (de) | 2005-09-15 |
| WO2003073362A1 (fr) | 2003-09-04 |
| DE50301097D1 (de) | 2005-10-06 |
| EP1479029B1 (fr) | 2005-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |